Abstract: A data processing apparatus having breath detecting function and an image display control method using breath detection in such a data processing apparatus where in a breathing sound inputted by input means such as a microphone is detected, a feature quantity such as a voice power is transformed into another physical amount such as a temperature and a moving speed, and a display state of an image on a display screen or a driving state of a movable object such as a robot is controlled, whereby a user can feel that the user's breath directly operates the image and robot so that a feeling of physical disorder is eliminated, and thus a difference between the user and a virtual world on the display screen or robot is eliminated.

Abstract: Disclosed is a substrate bias generator circuit which comprises an oscillator circuit, a driving circuit producing a rectangular-wave signal in accordance with an oscillation output signal from the oscillator circuit, and a charge pump circuit pumping electric charges into a substrate in accordance with the rectangular-wave output signal from the driving circuit. The oscillator circuit is a voltage-controlled oscillator circuit whose oscillation frequency is controlled in accordance with a substrate bias voltage from the charge pump circuit.